Are Bullmastiffs Good Family Dogs? Temperament & Training

Big, calm and deeply loyal, the Bullmastiff was bred to guard — and that history shapes a dog that is both wonderfully devoted to its family and powerful enough to demand responsible ownership. So are Bullmastiffs good family dogs? For the right household, very much so. Here's what they're like to live with, how to train and socialise them, and the UK legal facts every owner should know.

The Bullmastiff temperament

Bullmastiffs are best described as gentle giants. At home they tend to be calm, affectionate and steady, forming an intense bond with their family. They're naturally protective and alert — the breed was developed to deter intruders — but a well-bred, well-raised Bullmastiff is not a hyperactive or nervy dog. They're more inclined to lean against your leg and watch over the household than to bounce off the walls.

That said, they are strong-willed in a quiet way and physically enormous. A Bullmastiff that hasn't learned good manners isn't being malicious, but a 55kg dog that pulls, jumps up or barges through doorways is a genuine handful. The temperament you want — calm, biddable, confident — is shaped by early experience and consistent training, not left to chance.

Are Bullmastiffs good with children?

Many Bullmastiffs are patient and affectionate with the children they're raised with, and their steady nature can make them lovely family dogs. But two things always apply. First, size: even a gentle Bullmastiff can knock over a toddler simply by turning around, so supervision around small children is essential. Second, the usual golden rule — never leave any dog and young child unsupervised, and teach children to respect the dog's space, especially around food and rest. Done sensibly, Bullmastiffs and older, dog-savvy children often get on beautifully.

Socialisation: start early

Because the Bullmastiff is a powerful guardian breed, early, positive socialisation is non-negotiable. From puppyhood, introduce yours calmly and happily to a wide variety of people, friendly dogs, places, sounds and everyday situations. The goal is a confident adult that takes the world in its stride rather than reacting to it. A well-socialised Bullmastiff is relaxed in public; an under-socialised one of this size and strength is a problem you'll be managing for years.

Training a Bullmastiff

Bullmastiffs respond best to positive, reward-based training built on consistency and a calm, confident handler. They're intelligent and want to please their family, but they don't take well to harsh handling. Focus early on the essentials that matter most in a giant breed: reliable lead manners (a well-fitted harness helps you walk a strong dog comfortably), a solid recall, settling calmly, and not jumping up. Keep sessions short, upbeat and frequent, and start the moment your puppy comes home.

Mental stimulation matters too. Bullmastiffs aren't an endurance breed, but a bored dog of any size finds its own entertainment — puzzle feeders, scent games and good chew toys channel that energy positively.

Are Bullmastiffs banned in the UK?

No. The Bullmastiff is not a banned or restricted breed in the UK — it's a long-established, Kennel Club-recognised pedigree breed. The dogs restricted under the Dangerous Dogs Act are a specific named list, and the Bullmastiff is not on it. What does apply to every Bullmastiff owner is the general law that all dogs must be kept under control: a dog of this size and strength must be securely managed in public, properly trained and never allowed to become dangerously out of control. Responsible ownership is the whole point.

Living with a Bullmastiff

Expect a calm, devoted housemate who drools, snores, sheds moderately and wants to be near you. They're not a breed for owners who want a jogging partner or a dog to leave alone all day. They are a breed for people who'll do the early training and socialisation, supervise around small children, and enjoy the steady, affectionate company of a true gentle giant.

When to seek help

If your Bullmastiff shows guarding behaviour over food or space, reactivity towards people or dogs, or you're struggling with their strength on the lead, speak to your vet and an accredited, reward-based behaviourist early. With a dog this powerful, addressing issues while they're small is far easier than waiting.

*This is general guidance, not a substitute for advice from your vet, who can assess your individual dog.*

Sources

• RVC VetCompass — UK dog health and behaviour research (rvc.ac.uk/vetcompass).
• UK Kennel Club & BVA — breed standards, temperament and ownership guidance (thekennelclub.org.uk).
• PDSA — dog behaviour and breed care (pdsa.org.uk).
• Blue Cross — dog training and behaviour (bluecross.org.uk).